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Commit 21d72af7 authored by Tushar Dave's avatar Tushar Dave Committed by David S. Miller
Browse files

samples/bpf: adjust rlimit RLIMIT_MEMLOCK for xdp_redirect_map 



Default rlimit RLIMIT_MEMLOCK is 64KB, causes bpf map failure.
e.g.
[root@labbpf]# ./xdp_redirect_map $(</sys/class/net/eth2/ifindex) \
> $(</sys/class/net/eth3/ifindex)
failed to create a map: 1 Operation not permitted

The failure is 100% when multiple xdp programs are running. Fix it.

Signed-off-by: default avatarTushar Dave <tushar.n.dave@oracle.com>
Acked-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6dfca831

samples/bpf/xdp_redirect_map_user.c

+7 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <string.h>

#include <unistd.h>

#include <libgen.h>

#include <sys/resource.h>



#include "bpf_load.h"

#include "bpf_util.h"
@@ -74,6 +75,7 @@ static void usage(const char *prog) 


int main(int argc, char **argv)

{

	struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};

	const char *optstr = "SN";

	char filename[256];

	int ret, opt, key = 0;
@@ -97,6 +99,11 @@ int main(int argc, char **argv) 
		return 1;

	}



	if (setrlimit(RLIMIT_MEMLOCK, &r)) {

		perror("setrlimit(RLIMIT_MEMLOCK)");

		return 1;

	}



	ifindex_in = strtoul(argv[optind], NULL, 0);

	ifindex_out = strtoul(argv[optind + 1], NULL, 0);

	printf("input: %d output: %d\n", ifindex_in, ifindex_out);